How to mail merge Word document in WPF

2 mins read

Mail merge is a process of merging data from a data source to a Word template document. Syncfusion Essential DocIO is a .NET Word library used to generate reports like invoice, payroll, letter, etc., by performing mail merge faster in a batch process without Microsoft Word or interop dependencies. Using this library, you can mail merge Word document in WPF.

Steps to Mail merge Word document in WPF:

Create a new WPF application project.
Install the Syncfusion.DocIO.Wpf NuGet package as a reference to your WPF application from NuGet.org.
Include the following namespaces in the MainWindow.xaml.cs file.

using Syncfusion.DocIO.DLS;
using System;
using System.ComponentModel;
using System.Windows;

Imports Syncfusion.DocIO.DLS
Imports System
Imports System.ComponentModel
Imports System.Windows

Add a new button in MainWindow.xaml to create Word document report using mail merge as follows.

XAML

<Button Click="btnCreate_Click" Margin="0,0,10,12" VerticalAlignment="Bottom" Height="30" BorderBrush="LightBlue" HorizontalAlignment="Right" Width="180">
<Button.Background>
    <LinearGradientBrush EndPoint="0.5,-0.04" StartPoint="0.5,1.04">
        <GradientStop Color="#FFD9E9F7" Offset="0"/>
        <GradientStop Color="#FFEFF8FF" Offset="1"/>
    </LinearGradientBrush>
</Button.Background>
<StackPanel Orientation="Horizontal" Height="23" Margin="0,0,0,-2.52" VerticalAlignment="Bottom" HorizontalAlignment="Right" Width="100">
    <Image Name="image2" Margin="2" HorizontalAlignment="Center" VerticalAlignment="Center" />
    <TextBlock Text="Create Document" Height="15.96" Width="126" Margin="0,4,0,3" />
</StackPanel>
</Button>

Add the following code in btnCreate_Click to mail merge Word document.

//Opens the Word template document
using (WordDocument document = new WordDocument("Letter Formatting.docx"))
{
    string[] fieldNames = { "ContactName", "CompanyName", "Address", "City", "Country", "Phone"};
    string[] fieldValues = { "Nancy Davolio", "Syncfusion", "507 - 20th Ave. E.Apt. 2A", "Seattle, WA", "USA", "(206) 555-9857-x5467" };
    //Performs the mail merge
    document.MailMerge.Execute(fieldNames, fieldValues);
    //Saves the Word document
    document.Save("Result.docx");
}

'Opens the Word template document 
Using document As WordDocument = New WordDocument ("Letter Formatting.docx")
    Dim fieldNames As String() = {"ContactName", "CompanyName", "Address", "City", "Country", "Phone"}
    Dim fieldValues As String() = {"Nancy Davolio", "Syncfusion", "507 - 20th Ave. E.Apt. 2A", "Seattle, WA", "USA", "(206) 555-9857-x5467" }
    'Performs the mail merge
    document.MailMerge.Execute(fieldNames, fieldValues)
    'Saves the Word document
    document.Save("Result.docx")
End Using

A complete working example of mail merge Word document in WPF can be downloaded from mail merge Word document.zip

By executing the program, you will get the output Word document as follows. Mail merge output Word document

Take a moment to peruse the documentation, where you can find basic Word document processing options along with features like mail merge, merge and split documents, find and replace text in the Word document, protect the Word documents, and most importantly PDF and Image conversions with code examples.

Explore more about the rich set of Syncfusion Word Framework features.

An online example to perform mail merge in Word document.

How to mail merge Word document in WPF

Steps to Mail merge Word document in WPF:

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